Some sites such as Ok Cupid.com, and are free and offer additional paid services in a freemium revenue model.
Some sites are broad-based, with members coming from a variety of backgrounds looking for different types of relationships.
Due to the level of competition between free dating sites, as well as the overall drop in traffic to and revenue for dating sites generally, This represents a break from traditional externally sourced ads and is just one of the ways that the revenue models of free dating sites are evolving.Especially popular in Eastern Europe, some sites offer full access to messaging and profiles, but provide additional services for pay, such as bumping profiles up to the top of the list, removing advertisements, making paying users' profiles appear several times in different places in the search results, and giving paying users a more advanced search engine to work with (in one example, free users may only search for persons of specified age, gender, orientation, and city, while subscribers may search for any and all parameters listed in profiles, such as height, weight, interests, etc.).As online dating's population becomes larger, sites with specific demographics are becoming more popular as a way to narrow the pool of potential matches.The 20 most popular dating sites in 2006 as ranked by Hitwise include j (for Jewish singles), Christian Mingle.com, Christian Cafe.com, Man (same sex introductions), Love From India.ini, Black Christian People Meet.com, (for Latino singles), Asian People Meet.com, and (for Indian singles).A German documentary analyzed the market and uncovered multiple problems of online dating sites.
Amongst them are "romance-scamming" (persons registering on the sites to get money from people falling in virtual love with them), using controllers or animators registered with multiple fake accounts, using unexpected and sometimes unlawful conditions in the terms and conditions leading to longer contracts a client intended to sign.At the end of November 2004, there were 844 lifestyle and dating sites, a 38% increase since the start of the year, according to Hitwise Inc. By 2007, many prominent studies show that Baby Boomer interest in online dating have soared.However, market share was increasingly growing by several large commercial services, including Personals. Some online dating websites provide webcam chats between members.Some sites provide free registration, but may offer services which require a monthly fee.Other sites depend on advertising for their revenue.Most sites allow members to upload photos or videos of themselves and browse the photos and videos of others.